urineOFF Bio-Enzymatic Dog and Puppy Stain and Odor Remover Spray for Carpet and Upholstery Includes One (1) 1 Gallon Dog and Puppy Formula to remove urine from all hard and soft surfaces Urine Off is formulated to destroy urine, permanently removing urine from all hard and soft surfaces #1 choice with vets and carpet institutes Permanently eliminates urine odor and stains and discourages territory marking behavior Urine Off uses a combination of naturally occurring micro-organisms and their enzymes to digest the uric acid crystals (which produce urines pungent aroma) as well as urea (the sticky substance in urine) and proteins (which promote pathogen growth).